[jira] [Assigned] (HIVE-22526) Extract Compiler from Driver

["Miklos Gergely (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-22526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Miklos Gergely reassigned HIVE-22526:
-------------------------------------


> Extract Compiler from Driver
> ----------------------------
>
>                 Key: HIVE-22526
>                 URL: https://issues.apache.org/jira/browse/HIVE-22526
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Hive
>            Reporter: Miklos Gergely
>            Assignee: Miklos Gergely
>            Priority: Major
>             Fix For: 4.0.0
>
>
> The Driver class contains ~600 lines of code responsible for compiling the command. That means that from the command String a Plan needs to be created, and also a transaction needs to be started (in most of the cases). This is a thing done by the compile function, which has a lot of sub functions to help this task, while itself is also really big. All these codes should be put into a separate class, where it can do it's job without getting mixed with the other codes in the Driver.



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